// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/views/view_model.h"

#include "base/strings/string_number_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/views/view.h"

namespace views {

namespace {

    // Returns a string containing the x-coordinate of each of the views in |model|.
    std::string BoundsString(const ViewModel& model)
    {
        std::string result;
        for (int i = 0; i < model.view_size(); ++i) {
            if (i != 0)
                result += " ";
            result += base::IntToString(model.ideal_bounds(i).x());
        }
        return result;
    }

    // Returns a string containing the id of each of the views in |model|.
    std::string ViewIDsString(const ViewModel& model)
    {
        std::string result;
        for (int i = 0; i < model.view_size(); ++i) {
            if (i != 0)
                result += " ";
            result += base::IntToString(model.view_at(i)->id());
        }
        return result;
    }

} // namespace

TEST(ViewModel, BasicAssertions)
{
    View v1;
    ViewModel model;
    model.Add(&v1, 0);
    EXPECT_EQ(1, model.view_size());
    EXPECT_EQ(&v1, model.view_at(0));
    gfx::Rect v1_bounds(1, 2, 3, 4);
    model.set_ideal_bounds(0, v1_bounds);
    EXPECT_EQ(v1_bounds, model.ideal_bounds(0));
    EXPECT_EQ(0, model.GetIndexOfView(&v1));
}

TEST(ViewModel, Move)
{
    View v1, v2, v3;
    v1.set_id(0);
    v2.set_id(1);
    v3.set_id(2);
    ViewModel model;
    model.Add(&v1, 0);
    model.Add(&v2, 1);
    model.Add(&v3, 2);
    model.Move(0, 2);
    EXPECT_EQ("1 2 0", ViewIDsString(model));

    model.Move(2, 0);
    EXPECT_EQ("0 1 2", ViewIDsString(model));
}

TEST(ViewModel, MoveViewOnly)
{
    View v1, v2, v3;
    v1.set_id(0);
    v2.set_id(1);
    v3.set_id(2);
    ViewModel model;
    model.Add(&v1, 0);
    model.Add(&v2, 1);
    model.Add(&v3, 2);
    model.set_ideal_bounds(0, gfx::Rect(10, 0, 1, 2));
    model.set_ideal_bounds(1, gfx::Rect(11, 0, 1, 2));
    model.set_ideal_bounds(2, gfx::Rect(12, 0, 1, 2));
    model.MoveViewOnly(0, 2);
    EXPECT_EQ("1 2 0", ViewIDsString(model));
    EXPECT_EQ("10 11 12", BoundsString(model));

    model.MoveViewOnly(2, 0);
    EXPECT_EQ("0 1 2", ViewIDsString(model));
    EXPECT_EQ("10 11 12", BoundsString(model));

    model.MoveViewOnly(0, 1);
    EXPECT_EQ("1 0 2", ViewIDsString(model));
    EXPECT_EQ("10 11 12", BoundsString(model));

    model.MoveViewOnly(1, 0);
    EXPECT_EQ("0 1 2", ViewIDsString(model));
    EXPECT_EQ("10 11 12", BoundsString(model));
}

} // namespace views
